@MarcRobinson Wow bravo! And welcome to SVS, cannot wait to see more of your wonderful work. I agree, this concept is awesome!
One thing I'd maybe add or modify is: why does the end of the bridge have such a clean stop? I'd think maybe (depending on your story) it might have crumbled away or deteriorated over time, or maybe it is still being built and then it makes sense to end so cleanly.
Just some thoughts from an external perspective. Keep up the great work!